f/overrides/event-backup/inds-dividend.csv
Greg Pomerantz bb8e39605e Event-history protection: backup dir, empty-download fallback, docs
Yahoo's 2026 event-feed change (capitalGain events dropped for some
funds; no events at all for terminated tickers) can wipe good event
history on re-download. Defense in depth:

- overrides/event-backup/: last-known-good copy of every dividend/
  capitalGain file (8,192 files, 58 MB); refresh with
  scripts/backup_events.py after each dump update
- data.py event_file(): frozen > data-root (while populated) > backup;
  used by panel reads, verify_official, and the double-listing scanner
- README: capital-gain files are mutual-fund-only in this dump; Yahoo
  has no LT/ST split (tax.py taxes capg at lt_rate; the per-fund split
  would come from fund-company annual tax statements or commercial feeds)
- tests: exact Timestamp .loc keys (pandas 3.x string matching returns a
  Series on large DatetimeIndex)
2026-08-31 21:59:25 -04:00

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Date,Dividends
2024-06-27,0.203424
2018-12-24,0.159700
2020-09-21,0.185131
2021-06-21,0.075179
2019-06-25,0.059328
2021-09-23,0.192300
2024-09-26,0.342853
2022-06-23,0.089881
2023-06-22,0.176920
2024-12-27,0.431941
2018-09-25,0.204135
2020-06-22,0.072847
2020-12-21,0.254691
2022-03-24,0.045614
2025-09-04,0.397617
2022-09-22,0.515068
2022-12-22,0.316873
2023-09-21,1.042293
2025-06-05,0.067071
2026-06-04,0.036860
2018-06-26,0.069972
2019-09-24,0.149441
2021-03-22,0.163988
2023-03-23,0.080754
2025-12-30,0.891633
2026-03-05,0.028984
2019-03-26,0.239146
2019-12-24,0.303576
2020-03-23,0.105942
2021-12-23,0.261449
2024-03-21,0.344559